Sample-and-hold circuit and driver circuit

A driver circuit for applying a grayscale voltage to signal lines of a display device, comprising:

• a grayscale-voltage output circuit outputting a grayscale voltage;
• an amplifier circuit amplifying the grayscale voltage to output the amplified grayscale voltage to a display device;
• and
• a precharge voltage generating circuit generating a precharge voltage for an input of the amplifier circuit before scanning each scanning line of the display device.

A driver circuit, comprising:

• an input terminal applied with grayscale voltage;
• a node;
• an amplifier circuit provided between the node and an output terminal;
• and
• a switch circuit provided between the input terminal and the node and including a first switch and a second switch, the switch circuit supplying charges to the node through the first switch and the second switch during a first period and supplying charges corresponding to a grayscale voltage to the node during a second period following the first period.